package servlet;

import pojo.Dept;
import service.impl.DeptService;
import service.impl.DeptServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet(urlPatterns = {"/list"})//一个类只能响应一个请求
public class DeptServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //创建业务层对象 多态
        DeptService deptService = new DeptServiceImpl();

        List<Dept> depts = deptService.findAll();
        req.setAttribute("depts", depts);
        req.getRequestDispatcher("/dept_list.jsp").forward(req, resp);


    }
}
